02.07.2001
12:54

Will Buran Fly Again?

25.06.2001
13:20

XXIV International Workshop on High Energy Physics and Field Theory

12.06.2001
10:25

New Atomic Submarine AKULA--2 Launched Several Days Ago

12.06.2001
10:23

First Thermonuclear Reactor Is Under Way in Russia

23.05.2001
20:00

New--Generation Carrier Rocket at le Bourget

21.05.2001
18:28

The Pellicle Beam Splitters

Disigned by Gennadiy Borisov

email:borisov@sai.crimea.ua

No Change in Optical Path Length

No Ghost Images from Second Surface Reflections

No Chromatic and Spherical Aberration with Converging Beam

The Pellicle Membranes

Excellent membrane mirror for adaptive optic systems

Pellicles are very thin organic polymer membranes bonded to lapped polishing sitall ceramic glass ring.



Ghost images are eliminated by the thinness of the membrane, as the second surface reflection, for all practical purposes, superimposes on the first surface reflection. The uncoated pellicle reflects from 2% to 16 % and transmits from 98% to 84% throughout the visible and infrared regions and depend on thickness and wavelength. Absorption is imperceptible. All pellicles are mounted on a precision black anodized, hard aluminum holder.



Specifications

Pellicle Thickness: 0.1 - 0.4 microns

Index of Refraction (Nd): 1.5

Outer Diameter: Clear Aperture + 20 mm







Vladimir Lipunov

12.04.2001
10:16

First Man in Space - 40 Years Ago Sharp!

05.04.2001
16:12

Satellite Acquired by the Moon 35 Years ago

19.03.2001
20:05

New Rocket Carrier is under Way at "Progress"

16.03.2001
17:15

Russian scientists support BeppoSax!

16.03.2001
16:53

Save the best Italian experiment!

08.03.2001
20:51

Yakov Zeldovich Would Have Today his 87th Anniversary

04.03.2001
20:45

Forty Years Passed since the First Successful Interception of a Ballistic Missile

04.03.2001
13:27

First Thermonuclear Reactor May Be Elaborated in Russia

01.03.2001
22:18

Russian Coil for ITER

12.02.2001
14:58

11 Questions of American Physicists to the Universe and 11 comments of a Russian Astrophysicist

31.01.2001
16:03

35 Years Since the First Soft Landing on the

29.01.2001
16:15

High-energy charged particle flux variations in vicinity of Earth as earthquake precursors

24.01.2001
21:39

New National State Park in Russia

05.01.2001
16:34

World's Best Setup for Laser Treatment of Metals Developed in Novosibirsk